rate of penetration

Long length stiff formation with strong abrasive property, poor drillabillity, low mud drilling rate, frequent downhole drilling failures and long construction cycle has restricted the exploration and exploitation of deep oil and gas reservoir.

遭遇大段研磨性强、可钻性差的难钻地层,钻井液钻井钻速慢,井下事故频繁,建井周期长,已成为制约深层油气资源有效勘探开发的瓶颈。

The article analyzes general geological situation and drilling difficulties of East Sichuan Puguang Structure and concludes technical measures to enhance mechanical drilling rate, combining which with deep well safety drilling technology and mud technology, forms optimal and fast drilling technology in East Sichuan Puguang Structure.

分析了川东地区普光构造的地质概况和钻井难点,总结了提高机械钻速的技术措施,并与深井安全钻井技术和钻井液技术一起形成了川东地区普光构造优快钻井技术,对提高川东地区的钻井速度,加快川东地区的勘探开发步伐具有重要意义。

The drilling rate in Penglaizhen formation increases dramatically,while that in Suining and Shaximiao formations increases more slowly.

为提高机械钻速,节约钻井成本,加快川西深层须家河组气藏勘探开发进程,进行了复合钻井技术地层适应性研究。

A Research on Technology for Increasing Rate of Penetration in Daqing Xushen Natural Gas Field;

大庆徐深气田提高钻速技术研究

The rate of penetration of PDC bits relates closely to its self-sharpening property.

复合片钻头的钻速与其切削齿的自锐性密切相关,钻头台架试验反映了这种内在联系,并用平均钻速((?))和平均钻速变化率((?))等指标对复合片自锐性能进行描述与评价。

The analyses of the relationship between drilling parameter and rate of penetration was done,and the principle of coupled driven drilling by improving rotary speed of bit was revealed to increase bit rock-breaking energy to improve penetration rate.

分析了钻井参数与钻速的关系,揭示了复合钻井通过提高钻头转速,从而增加钻头破岩能量来提高机械钻速的机理;在分析井斜原因和钟摆钻具防斜打直原理的基础上,分析了直螺杆钻具和弯外壳螺杆钻具组合的防斜机理以及两者的联系与区别,指出在地层倾角较小时采用直螺杆钻具组合,地层倾角较大时采用弯外壳螺杆钻具组合,以达到防斜打快的目的。

At present, the drilling speed in the deep gas reservoir of Xujiahe group in West Sichuan basin is slow and the drilling period is long.

针对川西深层须家河组气藏钻井速度慢、钻井周期长的现状,从钻遇地层的地质特征入手,分析目前川西深井普遍采用的井身结构,钻井参数和钻井新技术的应用情况,总结了钻速慢的原因。

In view of raising the drilling speed of gas wells in the central part of the basin, the influence of the casing programme, hydraulic and mechanical parameters, polymer drilling fluid and well cementa- tion by direct pumping and backsqueezing, etc.

本文针对天然气井提高钻井速度问题,总结分析了盆地中部井身结构,水力、机械参数,聚合物钻井液,正注反挤固井等工艺技术对该地区钻速的影响。

Simulation of penetration rate of air percussion drilling bit;

冲旋钻井机械钻速仿真研究

Experimental investigation in transmission ratio and penetration rate of cone bits;

81／2XHP2S—1和81／2HP2型牙轮钻头传动比及机械钻速的试验研究

It has long been held that the penetration rate of PDC bits is lower than roller bits during air drilling.

长期以来人们一直认为,在气体钻井中PDC钻头机械钻速没有牙轮钻头高,而且气体散热能力差,易损坏PDC钻头的复合片而使钻头早期失效,因此,在气体钻井中绝大多数使用牙轮钻头。

In view of many problems faced by drilling in the lower stratum in Xujiaweizi region, such as complex geologic structures, high grade value of rock drillability, low drilling rate, slow footage, and long drilling cycle, it is urgent to correctly predict the grade value of rock drillability which will provide powerful references for a better drilling plan in reasonable way.

针对徐家围子地区下部地层的复杂情况,岩石可钻性级值较高,钻井机械钻速低、进尺慢和钻井周期长的问题,迫切需要准确预测徐家围子地区下部地层的岩石可钻性级值,为科学制定钻井计划提供有力依据。

Although the drilling rate is related to the structure of the bit, property of the drilling fluid, drilling parameter as well as make-up of string and so on, the theory and practice indicates that the formation factor is the main factor in affecting drilling rate, which not only affects drilling rate directly, but also restrains the influence of drilling parameter on drilling rate.

虽然钻井的机械钻速与钻头结构、钻井液性能、钻进参数和钻具组合等因素密切相关,但理论和实践表明,地层因素仍是影响钻速的最主要因素,它不仅直接影响钻速,而且也制约着钻井参数对钻速的影响。

The mechanical drilling rate relates closely to drilling bit structure,drilling fluid property,drilling parameters and drilling tool constitution,but according to theory and practice formation factor is still the one that impacts the drilling rate most.

钻井的机械钻速与钻头结构、钻井液性能、钻进参数和钻具组合等因素密切相关,但理论和实践表明,地层因素仍是影响钻速的最主要因素,它不仅直接影响钻速,而且也制约着钻井参数对钻速的影响。

Modeling and Appling of Drilling Speed of Cutting Type PDC Bit;

切削式PDC钻头钻速方程建立及其应用

5.9 The penetration rate (ROP) has been 6.18 meters per hour.

机械钻速为6.18米/小时。

ROP Forecast by Artificial NN

利用人工神经网络原理对钻井中钻速的预测

Improvement of penetration rate with hydraulic pulsating-cavitation jet compound drilling technology

利用水力脉冲空化射流复合钻井技术提高钻速

A Study on the Theory and Technology of Drilling Fluids to Increase ROP.

提高机械钻速的钻井液理论与技术研究

Calculating Method and Effect on ROP of Ratio for WOB of RWD Tools

随钻扩眼工具钻压分配比的计算方法及对钻速的影响

Converting gas drilling to conventional drilling within short time

气体钻井快速转换为常规钻井的钻井液技术

quick spindle adjustment

(钻床) 快速主轴调整

low speed high torque turbodril

低速大扭矩涡轮钻具

Razor Tergum digs into the ground and digs out at another place quickly.

剃背迅速地钻进地底并在任一个地方钻出来。

The Spindle System and Drills Dynamic Characters Study for High-speed Micro-drills;

高速微孔钻床主轴系统及钻头的动态特性研究

Research on Bit for Efficient Drilling of Gas Drainage Borehole in Nantong Mining Area;

南桐矿区瓦斯抽放孔快速钻进钻头的研究

The Application of the Fast Drilling Fluid Technology in the West of Qaidam Basin.

快速钻井钻井液技术在柴西地区的应用

The flames darted into a rick of straw with lightning swiftness.

火苗象闪电一样迅速地向草垛里钻着。

bit-pinching formations

钻压略重就扭矩增大转速减慢的地层

SCR controlled stepless speed regulation bench drill

可控硅控制无级调速台钻

They introduced a special method of high-speed drilling.

他们采用了一种高速钻探的特殊方法。

He darted off the road into the bushes.

他迅速离开大街钻进了灌木丛。